Controlling volume of an amplifier..

[ronjodu]

I wish I had seen this thread earlier as I would have given a thumbs up for the PGA2320 Volume control chip from TI. I have one of them running my Gainclone amp and couldn't be happier with it although I don't consider myself an Audiophile by any means.
I control it with 3 pushbuttons, increase gain, decrease gain and a third for Mute, all running from a 16f876.

Here are a few pictures.
The first is the PGA in action. The thing to the left is a programming dongle I use to cram stuff into the bootloader and the heavy white wire goes to a LM34 to take the temperature of the Amp chip.

The second is of the amp itself, a dual mono.
The third is a 7 segment display I'm toying with to show gain.